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NBN Co executive chairman Ziggy Switkowski is looking forward to former Vodafone Australia boss Bill Morrow lightening his workload in just over a month's time.

Dr Switkowski has had a torrid time since taking over the rollout of the troubled and contentious National Broadband Network (NBN) in October, in the wake of the federal election.

He has expanded the board, appointed new senior executives including Mr Morrow as chief executive, and has introduced new processes of transparency, including NBN Co's first ever half-year financial results briefing on Friday.

"We've been appropriately tested, scrutinised, attacked at various senate hearings - we've had four so far, the fifth - which is senate estimates - is next week. That's a pretty thorough going over of the executive and testing of our thinking and our progress," Dr Switkowski told analysts and media at the briefing.

After five years, the NBN has eaten up $7.3 billion, including $6.5 billion of taxpayer funds, and is just three per cent complete after suffering numerous delays to progress benchmarks.

Dr Switkowski is implementing the Abbott government's cheaper Fibre-To-The-Node (FTTN) model in place of Labor's state-of-the-art Fibre-To-The-Premises model and is seeking to start with as clean a slate as possible.

Pointedly he referred to the FTTN model - which NBN Co is calling the "Optimised Multi-Technology Mix" because it employs numerous transmission methods - as the "more popular" form of rollout for broadband networks around the world.

"We are in a new era, it's a new government, a new management team, a new strategy a new set of technologies so history is not that useful. We're going to create our own history," he told AAP on Friday.

Dr Switkowski said he inherited a young company that had come a long way in a short time and was doing many things well, including commissioning a satellite program and rolling out through greenfield sites.

"Many of the things that were going on were being really well done," he said.

"The offset of that was it was a company that was very highly political with budgets and targets that were unrealistic, with a culture that was highly committed to aggressive outcomes but determined not to recognise that the reality was so different."

Dr Switkowski, once the chief executive of Telstra, said he is very much looking forward to stepping back and assuming regular chairman's duties following Mr Morrow's arrival on April 2.

In the meantime he says he is enjoying the work.

"For me it's an exhilarating experience, this is a very exciting project," he said.